Golf ball putting aid



FIG. 1 is a perspective view of a gold ball putting aid showing my new design;

FIG. 2 is an elevational view thereof showing the side opposite that shown in FIG. 1;

FIG. 3 is an elevational view looking from the right of FIG. 2, the opposite side being a mirror image thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a golf ball putting aid, as shown and described. 